How to remove tag attributes in php

php method to remove tag attributes: 1. Create a PHP sample file; 2. Remove the tag attributes through "preg_replace($del,"",$file);" and other methods.

#The operating environment of this article: Windows 7 system, PHP version 7.4, Dell G3 computer.

How to remove tag attributes in php?

Use PHP to remove some attributes in all html tags

<?php
set_time_limit(0);
function view_dir($dir)
{
$dp=opendir($dir); //打开目录句柄
//echo "<br>".$dir."<br><br>"; 
$path2=&#39;&#39;;
while ($file = readdir($dp)) //遍历目录
{
   if ($file !=&#39;.&#39;&&$file !=&#39;..&#39;) //如果文件不是当前目录及父目录
   {    
    $path=$dir."/".$file; //获取路径
    if(is_dir($path)) //如果当前文件为目录
    {
     view_dir($path);   //递归调用
    }
    else   //如果不是目录
    {
 
//echo &#39;<tr><td><table width="100%" border="0" cellspacing="0" cellpadding="0">&#39;;
 
   $path2 .= $path."\r\n";
   
   $c=file_get_contents($path);
//   $c = str_replace(&#39;http://4.28.99.196/chigb&#39;, "", $c);
//   $c1=array(&#39; tppabs="/style/book.css" rel="stylesheet"&#39;,&#39; tppabs="/chigb/up.gif"&#39;,&#39; tppabs="/chigb/1pix.gif"&#39;,&#39; tppabs="/chigb/left.gif"&#39;,&#39; tppabs="/chigb/right.gif"&#39;);
//   $c2 = str_replace($c1, "", $c);
 
$del=array("/tppabs=.+?[&#39;|\"]/i");
$c2 = preg_replace($del,"",$c);
   $c2 = str_replace(&#39;" >&#39;, &#39;">&#39;, $c2);
 
   file_put_contents($path,$c2);
//echo &#39;<td width="52%" height="25"><a href="&#39;.$path.&#39;">&#39;.$path.&#39;</a></td>&#39;;
//echo &#39;<td width="17%" align="center"><a href=&#39;.$_SERVER[&#39;SCRIPT_NAME&#39;].&#39;?cp=&#39;.$path.&#39;> 复制至XX</a></td>&#39;;
//echo &#39;<td width="31%" align="center"><b><a href=&#39;.$_SERVER[&#39;SCRIPT_NAME&#39;].&#39;?cmd=del&name=&#39;.$path.&#39;>删除</a></b></td>&#39;;
//echo &#39;</tr>&#39;;
//echo &#39;</table></td></tr>&#39;;
    }
   }
}
return $path2."\r\n";
closedir($dp);
} 
$dir=&#39;E:book\chigb\x&#39;;
echo view_dir($dir);
 
 
 
 
 
$file=&#39;<div id="m"><p id="lg"><img src="../img/baidu_sylogo1.gif" width="27px" height="12px" usemap="#mp"><map name="mp"><a shape="rect" coords="40,25,230,95" href="../yuanso/index.html" target="_blank" title="点此进入空间" ></map></p><p id="nv"><a href="../yuanso/index1.html">文字1</a>　<b>文字2</b>　<a href="../yuanso/index3.html">文字3</a></p></div>
&#39;;
$del=array("/name=.+?[&#39;|\"]/i","/src=.+?[&#39;|\"]/i","/id=.+?[&#39;|\"]/i","/width=.+?[&#39;|\"]/i","/height=.+?[&#39;|\"]/i","/usemap=.+?[&#39;|\"]/i","/shape=.+?[&#39;|\"]/i","/coords=.+?[&#39;|\"]/i","/target=.+?[&#39;|\"]/i","/title=.+?[&#39;|\"]/i");
$file = preg_replace($del,"",$file);//去除style样式
$file = str_replace(" ","",$file);//去除所有空格
$file = str_replace("<ahref=","<a href=",$file);//还原空格
echo $file;
 
 
?>

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